Brake-operating means



April 17, 1928. 1,666,558

A. Y. DODGE BRAKE OPERATING MEANS Filed Oct. 2'7. 192? 32 55 f6 /6 fi- 40 v J0 as /4' w f76./

\ INVENTOR ADI E LY. DODGE ATTORNEY Patented Apia. 1928.

UNITED STATES PATENT OFFICE.

ADIEL Y. DODGE, OF SOUTH BEND, INDIANA, ASSIGNOR TO BENDIX BRAKE COMPANY,

OF SOUTHBEND, INDIANA, A CORPORATION OF ILLINOIS.

BRAKE-OPERATING MEANS.

Application filed October 27, 1927. Serial No. 228,997.

This invention relates to brakes and is illustrated as embodied in novel operating Preferably, the'key is heldin the slot in the bracket by the wall of an opening in a support carrying the bracket, the support in'the illustrated a-rangement being the backing plate of the brake; I

The above and-other objects and features of the invention, including various noveland desirable-details of construction, will be ap-',

parentfrom the following description oft-he illustrative embodiment shown in the-accom- .panying drawing, in which:

Figure 1 -'s a partial vertical section through the upper part of the brake, and showing'the operating means partly in vertical' section and partly in elevation; v

Figure 2 is a top plan view of the left end of the novel operating means, partly broken away in horizontal section;

Figure 3is a side elevation of the key; and Figure 4 is a bottom plan view of the key. The brake selected for illustration includes a rotatable drum 10, at the open side ,of

- which is a suitable support such as a backiug plate 12, and within which is arranged the friction means 14 of the brake. The backing plate 12 is carried in the usual manner by. the front or rear axle. The brake is applied by a device such as a double cam 16, preferably integral with a shaft 18journaled in a bearing formed .in a bracket 20 secured by bolts 22 to the support or backing plate 12. The shaft 18 is turned to apply the brake by a second shaft 24 shdably and universally mounted at its inner end on a support 26 carried by the side'member of the chassis frame and carrying an opcrating arm 28. The shaft 24 operates the shaft 18 through a universal joint arranged substantially in the swiveling axis of the .wheel'and including a pair ofoutwardly cylindrical connecting devices 30 having flat inner faces embracing the flattened end of --the shaft 24 and pivotal'ly mounted on the flattened end of the shaft 24 by a vertical pin 32. The universal joint thus' formedis housed by suitable. sheet metal stampings34 held by a coil spring 36 seating against a stamping 38 rest-mg on a snap ring 40 "ina groove formed in the shaft 24. 7

Accord ng to'an important feature of the presentinvention, axial movement of the shaft 18 is prevented by a novel key 42 projecting through a slot in the hollow bracket;

the shaft 18. As will be apparent more partlcularly from Figure 4, the key 42 is bent when 1t is formed sufficiently so that when it is forced into lace int-he slot in the bracket 20, it will bin in the'slot, thus preventing it from being accidentally displaced. Prefer- 'ably, however, the key 42 is also held by reason-of the fact that'it is arranged in line with the wall of the opening in the backing plate or other support 12 which carries the ollow bracket 20 projecting through the above describedopening. WhileI have described one embodiment of the invention in detail, it is not my intention "20 into a circumferential groove 44 cut in to limit itsscope to that particular embodiment or otherwise than by the terms of the the walls of said-opening and provided with an abutment for governing the axial position thereof in respect to saidsupport, an opening in said bracket extending within thewalls of said support, a slot in said bracket extending radially tothe last mentioned opening and communicating therewith and being outwardly closed by the walls .of the first mentioned opening, a shaft received in said last mentioned opening, a. circumferentialgroove in said shaft in linewlth said slot, and a key received in both said slot and provided with an opening, a bracket pro- 7 'vided with a part received in and guided by said groove and prevented from displacement by the walls of said first mentioned opening/ a I 3. In combination a brake support,fa; hol-.

16w bracket projecting throngh an {open-- ing therein, a slot in the wallsof. said bracket inline with said support, a shaft" rotatable in said bracket and provided with a groove -in line withsaid slot, and a key received by said slot and projecting into said groove for preventin axlal displacement of said shaft, said ke the wal s of said opening- 4. In combination, a brake support pro vided with an opening, a bracket received in'a'nd guided by the walls of said opening and -s ec11red .-to I said support, anopening through said'bracket, a slot in said bracket in line with-said support and extending from the outer surface thereof into the; last "mentioned l-opening', a shaft "motatably received in said last menti,oned opening-(pros 'vided' with til-circumferential groove in line with said slot, and a key received in both said slot and said groove andf prevented from displacement by the walls of the first mentioned opening whereby said shaft is held from axial movement.

eing held from displacement/by- .to bind against the walls ofthe slot p y a v I v signedmy ame. 5., In a braking mechanism for a motor means vehicle, aghrake support secured to an ,axle, brake shoes carried by said support," means for spreading) said shoes comprising a shaft carriedby racket on said support, means .ifor preventing axial movement of' said shaft" comprising a ke projecting through the walls of said brac et and engaging a groove in said shaft and heldagainst displacement by the walls of said support, a brake oper- In testimony Where0f,-- I have hereunto I ADIEL Ytnonei 

